[INFO] fetching crate worlds 0.1.1...
[INFO] testing worlds-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate worlds 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate worlds 0.1.1
[INFO] finished tweaking crates.io crate worlds 0.1.1
[INFO] tweaked toml for crates.io crate worlds 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate worlds 0.1.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate worlds 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.34
[INFO] [stderr]   Downloaded parity-scale-codec v3.7.4
[INFO] [stderr]   Downloaded bevy_ptr v0.15.3
[INFO] [stderr]   Downloaded worlds_derive v0.1.0
[INFO] [stderr]   Downloaded worlds_ecs v0.1.0
[INFO] [stderr]   Downloaded rustc-hex v2.1.0
[INFO] [stderr]   Downloaded const_format v0.2.34
[INFO] [stderr]   Downloaded byte-slice-cast v1.2.3
[INFO] [stderr]   Downloaded impl-trait-for-tuples v0.2.3
[INFO] [stderr]   Downloaded parity-scale-codec-derive v3.7.4
[INFO] [stderr]   Downloaded impl-codec v0.7.1
[INFO] [stderr]   Downloaded crunchy v0.2.3
[INFO] [stderr]   Downloaded zerocopy v0.8.23
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 663178f5eccdde069ead23e0bfd85ea695b430c3b35e171338abaa1ce9e5669d
[INFO] running `Command { std: "docker" "start" "-a" "663178f5eccdde069ead23e0bfd85ea695b430c3b35e171338abaa1ce9e5669d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "663178f5eccdde069ead23e0bfd85ea695b430c3b35e171338abaa1ce9e5669d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663178f5eccdde069ead23e0bfd85ea695b430c3b35e171338abaa1ce9e5669d", kill_on_drop: false }`
[INFO] [stdout] 663178f5eccdde069ead23e0bfd85ea695b430c3b35e171338abaa1ce9e5669d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d3ed5157e41590b8d7114635ad709389d9ae9a0fa167e3ddfc79ba68e820cd4
[INFO] running `Command { std: "docker" "start" "-a" "1d3ed5157e41590b8d7114635ad709389d9ae9a0fa167e3ddfc79ba68e820cd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling zerocopy v0.8.23
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling bevy_ptr v0.15.3
[INFO] [stderr]    Compiling uint v0.10.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling primitive-types v0.13.1
[INFO] [stderr]    Compiling worlds_derive v0.1.0
[INFO] [stderr]    Compiling worlds_ecs v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/worlds_ecs-0.1.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `worlds_ecs` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1d3ed5157e41590b8d7114635ad709389d9ae9a0fa167e3ddfc79ba68e820cd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d3ed5157e41590b8d7114635ad709389d9ae9a0fa167e3ddfc79ba68e820cd4", kill_on_drop: false }`
[INFO] [stdout] 1d3ed5157e41590b8d7114635ad709389d9ae9a0fa167e3ddfc79ba68e820cd4